After she had sex with her girlfriend, she came out of the white foam. What was the situation?
These white bubbles are the liquid secreted by the vagina. They will change into foam like changes during the course of sexual life without contacting with the penis. This is normal. It also reflects that your girlfriend's sexual excitement is better.
According to your description, this situation is a normal phenomenon. On the one hand, it may be due to the excessive excitement of women during sex and the secretion of a large amount of obscene water. On the other hand, it may also be caused by the exclusion of some semen after sex. Therefore, as long as there is no discomfort, don't worry about him
This should be a manifestation of normal secretion, especially when two people are in high mood. Secondly, if it is accompanied by obvious odor, it can not be ruled out that it is caused by fungal infection.